2 files changed, 18 insertions, 0 deletions
diff --git a/test/files/neg/t3871.check b/test/files/neg/t3871.check
new file mode 100644
index 0000000000..b920357ee6
--- /dev/null
+++ b/test/files/neg/t3871.check
@@ -0,0 +1,7 @@
+t3871.scala:4: error: variable foo in class Sub2 cannot be accessed in Sub2
+ Access to protected method foo not permitted because
+ enclosing class Base is not a subclass of
+ class Sub2 where target is defined
+    s.foo = true
+      ^
+one error found
diff --git a/test/files/neg/t3871.scala b/test/files/neg/t3871.scala
new file mode 100644
index 0000000000..fc459867df
--- /dev/null
+++ b/test/files/neg/t3871.scala
@@ -0,0 +1,11 @@
+class Base {
+  def mkNew() = {
+    val s = new Sub2
+    s.foo = true
+    s
+  }
+}
+
+class Sub2 extends Base {
+  protected var foo = false
+}